<p>Using historical QAS tests, the answers are (sorry, too tired for the writing Qs):</p>
<p>With no omits:</p>
<ol>
<li><p>M: You can get up to one question wrong and still get an 800, but this is unusual. On a typical curve, you can’t get any wrong.</p></li>
<li><p>CR: typically, you can get 2 wrong for an 800. Actually, 2 wrong is the most I’ve seen.</p></li>
</ol>
<p>With all omits:</p>
<ol>
<li><p>Same as above (1 omit max, typically 0 omits)</p></li>
<li><p>Up to 3 omits.</p></li>
</ol>